2000 Jeep Grand Cherokee, Turn Signals Erratic / Not Working

This 2000 Jeep Grand Cherokee came in with the complaint that the turns signals would work sometimes. When it arrived at the shop they were not working at all. Experience tells me that it is probably a faulty flasher assembly but a few panels have to be removed to access the flasher relay.

The panel at the lower edge of the instrument cluster unsnaps and pulls away. It has to be maneuvered around the tilt lever.


The fuse box cover at the lower left of the dash has to be removed. It unsnaps and pulls down.

There is a 10 mm headed screw in each of the lower corners of the knee bolster.

A phillip’s head screw at the end of the dash.

Two phillip’s headed screws at the top edge. One on either side of the steering column.

In the picture below, I am pointing out that there are relays above the fuse area.

The hazard/turn signal flasher relay. With either the hazards or turns signals switched on it usually only takes a slight push to make the flasher start working again. After I was sure of the problem, I used a pair of pliers to gently grab the relay and wiggle it from its socket.

I then used a couple of small screw drivers to release the side latches that hold the cover on the relay assembly.

With the latches released I separated the two pieces.

If you look closely at the upper left solder joint you should see the crack in the solder joint.

A little touch up with a soldering gun and some electronics grade solder and this one was fixed.

Sometimes more that one solder joint will have to be repaired so look closely.

51 discussions on “2000 Jeep Grand Cherokee, Turn Signals Erratic / Not Working”

  1. Sparky, thanks for the quick reply. I checked both of the items that you stated and no change…What else could be causing this? I removed the flasher module and noticed that the prongs that insert into the block are kinda dull..even though its brand new out of the box. So I did what any simple minded guy would, I took some emery cloth and lightly sanded each prong and reinserted the flasher into the block. Now the left turn signal goes on once and flashes on the left side only if the flasher is activated. Nothing on the right side regretably. I’m puzzled..please HELP!!!

  2. Hi Tommy3sons,

    I would start by checking the hazard switch to make sure it is off. Then I would remove the flasher to see if the front lights go off. Don’t forget to check the obvious, park light switch turned on.

  3. Well..I’m having the same problem on my 2000 Jeep Grand Cherokee Limited…no turn signals or flashers. Replaced the flasher module under the dash and the left turn signals started working but still no flashers. Come out to the car in the morning to go to work and the front running lights are on…so I disconnect the negative battery cable ..let stand for 5 minutes…reinstall…no change!!! What could be causing the problem? I don’t have the money to take it to a stealership to have them try to fix it. Please help!!!

  4. Thank you very much for this post. My son and I did the repair today and it was easy. The most time is spent taking the dash apart. Replacement of the flasher was quick!

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